topic If your program runs > 1 in Software Tuning, Performance Optimization & Platform Monitoring

Intel PCM: Set environment variables for programs being profiled

Irshad_P_ — Mon, 09 Dec 2013 08:20:39 GMT

Hi,

I'm trying to get stats for an OpenMP program using `pcm.x "path/to/executable"` after setting OMP_NUM_THEADS environment variable to `1`. PCM doesn't seem to respect that. It runs the program on all the available cores. Tried `pcm.x "export OMP_NUM_THREADS=1 && path/to/executable"` and also `pcm.x "OMP_NUM_THEADS=1 path/to/executable"`. Both doesn't work.

Any help on how to get this done is much appreciated.

you can try to put the two

Roman_D_Intel — Mon, 16 Dec 2013 09:20:33 GMT

you can try to put the two lines

export OMP_NUM_THREADS=1

path/to/executable

into "run.sh" script

and then execute pcm.x "sh run.sh"

Roman

Hi Roman,

Irshad_P_ — Mon, 16 Dec 2013 10:47:31 GMT

Hi Roman,

Thanks for the reply. But, wouldn't that pollute the numbers obtained ?

If your program runs > 1

Roman_D_Intel — Mon, 16 Dec 2013 10:51:49 GMT

If your program runs > 1 second I would say no.

Thanks :)

Irshad_P_ — Mon, 16 Dec 2013 11:10:54 GMT

Thanks :)